oadoi.org

https://oadoi.org· First analyzed 03 Jun 2026· Updated 03 Jun 2026

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oadoi.org

Mobile

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

15.197.149.68

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Heroku

Nameservers

ns1.dnsimple.com.ns2.dnsimple.com.ns3.dnsimple.com.ns4.dnsimple.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4 MB

14 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

6 Technologies Detected

Icon Libraries

Font Awesome Material Icons

CSS Frameworks

Fonts

Platforms

Frameworks

SEO Analysis

D44/100

Meta Tags9/15

Content5/12

Headings3/8

Technical9/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

oadoi.orgoadoi.org

Unpaywall: An open database of 20 million free scholarly articles

No description available for this page.

Title Length65 chars

Recommended: 50-60 chars (~384px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (4/4) — critical for accessibility and SEO

11 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

Local SEO

Local Search Readiness

5/100

Poor

2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F32/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

6/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:6%

Words:240

Token eff.:Too Short

Sections/1K:29.2

Structured Data

No Schema

Citation Readiness

Opening Summary31w

Descriptive Headingsavg 3.1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

4/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

0/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

30/100

413 mg

CO₂e / view

4.0 MB

Page Weight

15%

Cleaner Than

New Visitor

472 mg

Returning (cached)

236 mg

Annual (10K/mo)

49.5 kg

Emission Segments

Data Center

20 mg

Network

121 mg

Device

271 mg

Resource Breakdown

JavaScript

2.0 MB

Images

678.5 KB

CSS

1.4 MB

Fonts

4.5 KB

HTML

1.7 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

07.05.2026

Valid Until

05.08.2026

Subject Alternative Names (1)

unpaywall.org

SHA-256 Fingerprint

B8:AB:3F:3A:B4:81:B8:E1:C5:D5:E6:16:BF:47:58:45:CF:E7:D3:22...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 0s(public, max-age=0)

content-length

1421

content-type

text/html; charset=UTF-8

date

Wed, 03 Jun 2026 11:49:53 GMT

etag

W/"58d-19cc1193e58"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

oadoi.org

Domain Age

9y 7m

Created

16.10.2016

Expires

16.10.2026

Last Updated

30.11.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

57/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width,initial-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG Partial

58/100

Readability

/30

24/30

18px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

14/25

2.67:1 min contrast

Performance

/25

13/25

2 fonts · 2 req

Heading Font

Roboto

Sans

Body Font

Roboto

Sans18px

Contrast Ratio

2.67:1

3 issues

Reading Comfort

~34 CPL

Narrow lines

38px

16px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 43/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.7:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle FontsFlesch 43

Color Palette

7 unique colors

Dark

#343235

Other· 19.1%

#182022

Primary· 42.1%

#5b4236

Secondary· 13.6%

#5f4e4f

Secondary· 7.8%

#846057

Secondary· 6.7%

#a17c77

Secondary· 5.6%

#895343

Secondary· 4.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)

Website Identity

oadoi.org

[email protected]

9 years old

Location detected: 🇨🇦 Canadavia ip

GoDaddy.com, LLC

Social Profiles

X (Twitter)GitHub

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Last analyzed: 03 Jun 2026 at 11:50

Historical Analysis & Change Tracking